fgraph: Correct typo in ftrace_return_to_handler comment

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://lore.kernel.org/20250218122052.58348-1-haiyuewa@163.com
Signed-off-by: Haiyue Wang <haiyuewa@163.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

kernel/trace/fgraph.c

@@ -865,7 +865,7 @@ __ftrace_return_to_handler(struct ftrace_regs *fregs, unsigned long frame_pointe
 }
 
 /*
- * After all architecures have selected HAVE_FUNCTION_GRAPH_FREGS, we can
+ * After all architectures have selected HAVE_FUNCTION_GRAPH_FREGS, we can
  * leave only ftrace_return_to_handler(fregs).
  */
 #ifdef CONFIG_HAVE_FUNCTION_GRAPH_FREGS